<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="vue.js"></script>
</head>

<body>
    <div id ="app"> 
        <my-com></my-com>
    </div>
    <script type="text/x-template" id="myCom">
       <div>
        {{ msg }}
        <button @click="count++">{{ count}}</button>
       </div>
    </script>
    
    <script>
    
    Vue.component('myCom', {
        template: '#myCom',
        data(){
            return {
                count:0,
                msg: 'Hello Components'
            }
        }
    })
    new Vue({
        el: '#app'
    })
    </script>
</body>

</html>